Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
micropython/py/emitglue.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
250 lines (220 sloc)
8.57 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* | |
* This file is part of the MicroPython project, http://micropython.org/ | |
* | |
* The MIT License (MIT) | |
* | |
* Copyright (c) 2013, 2014 Damien P. George | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy | |
* of this software and associated documentation files (the "Software"), to deal | |
* in the Software without restriction, including without limitation the rights | |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
* copies of the Software, and to permit persons to whom the Software is | |
* furnished to do so, subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in | |
* all copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
* THE SOFTWARE. | |
*/ | |
// This code glues the code emitters to the runtime. | |
#include <stdint.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <assert.h> | |
#include "py/emitglue.h" | |
#include "py/runtime0.h" | |
#include "py/bc.h" | |
#include "py/objfun.h" | |
#include "py/profile.h" | |
#if MICROPY_DEBUG_VERBOSE // print debugging info | |
#define DEBUG_PRINT (1) | |
#define WRITE_CODE (1) | |
#define DEBUG_printf DEBUG_printf | |
#define DEBUG_OP_printf(...) DEBUG_printf(__VA_ARGS__) | |
#else // don't print debugging info | |
#define DEBUG_printf(...) (void)0 | |
#define DEBUG_OP_printf(...) (void)0 | |
#endif | |
#if MICROPY_DEBUG_PRINTERS | |
mp_uint_t mp_verbose_flag = 0; | |
#endif | |
mp_raw_code_t *mp_emit_glue_new_raw_code(void) { | |
mp_raw_code_t *rc = m_new0(mp_raw_code_t, 1); | |
rc->kind = MP_CODE_RESERVED; | |
#if MICROPY_PY_SYS_SETTRACE | |
rc->line_of_definition = 0; | |
#endif | |
return rc; | |
} | |
void mp_emit_glue_assign_bytecode(mp_raw_code_t *rc, const byte *code, | |
mp_raw_code_t **children, | |
#if MICROPY_PERSISTENT_CODE_SAVE | |
size_t len, | |
uint16_t n_children, | |
#endif | |
uint16_t scope_flags) { | |
rc->kind = MP_CODE_BYTECODE; | |
rc->is_generator = (scope_flags & MP_SCOPE_FLAG_GENERATOR) != 0; | |
rc->fun_data = code; | |
rc->children = children; | |
#if MICROPY_PERSISTENT_CODE_SAVE | |
rc->fun_data_len = len; | |
rc->n_children = n_children; | |
#endif | |
#if MICROPY_PY_SYS_SETTRACE | |
mp_bytecode_prelude_t *prelude = &rc->prelude; | |
mp_prof_extract_prelude(code, prelude); | |
#endif | |
#if DEBUG_PRINT | |
#if !MICROPY_PERSISTENT_CODE_SAVE | |
const size_t len = 0; | |
#endif | |
DEBUG_printf("assign byte code: code=%p len=" UINT_FMT " flags=%x\n", code, len, (uint)scope_flags); | |
#endif | |
} | |
#if MICROPY_EMIT_MACHINE_CODE | |
void mp_emit_glue_assign_native(mp_raw_code_t *rc, mp_raw_code_kind_t kind, const void *fun_data, mp_uint_t fun_len, | |
mp_raw_code_t **children, | |
#if MICROPY_PERSISTENT_CODE_SAVE | |
uint16_t n_children, | |
uint16_t prelude_offset, | |
#endif | |
uint16_t scope_flags, uint32_t asm_n_pos_args, uint32_t asm_type_sig | |
) { | |
assert(kind == MP_CODE_NATIVE_PY || kind == MP_CODE_NATIVE_VIPER || kind == MP_CODE_NATIVE_ASM); | |
// Some architectures require flushing/invalidation of the I/D caches, | |
// so that the generated native code which was created in data RAM will | |
// be available for execution from instruction RAM. | |
#if MICROPY_EMIT_THUMB || MICROPY_EMIT_INLINE_THUMB | |
#if __ICACHE_PRESENT == 1 | |
// Flush D-cache, so the code emitted is stored in RAM. | |
MP_HAL_CLEAN_DCACHE(fun_data, fun_len); | |
// Invalidate I-cache, so the newly-created code is reloaded from RAM. | |
SCB_InvalidateICache(); | |
#endif | |
#elif MICROPY_EMIT_ARM | |
#if (defined(__linux__) && defined(__GNUC__)) || __ARM_ARCH == 7 | |
__builtin___clear_cache((void *)fun_data, (uint8_t *)fun_data + fun_len); | |
#elif defined(__arm__) | |
// Flush I-cache and D-cache. | |
asm volatile ( | |
"0:" | |
"mrc p15, 0, r15, c7, c10, 3\n" // test and clean D-cache | |
"bne 0b\n" | |
"mov r0, #0\n" | |
"mcr p15, 0, r0, c7, c7, 0\n" // invalidate I-cache and D-cache | |
: : : "r0", "cc"); | |
#endif | |
#endif | |
rc->kind = kind; | |
rc->is_generator = (scope_flags & MP_SCOPE_FLAG_GENERATOR) != 0; | |
rc->fun_data = fun_data; | |
#if MICROPY_PERSISTENT_CODE_SAVE | |
rc->fun_data_len = fun_len; | |
#endif | |
rc->children = children; | |
#if MICROPY_PERSISTENT_CODE_SAVE | |
rc->n_children = n_children; | |
rc->prelude_offset = prelude_offset; | |
#endif | |
#if MICROPY_EMIT_INLINE_ASM | |
// These two entries are only needed for MP_CODE_NATIVE_ASM. | |
rc->asm_n_pos_args = asm_n_pos_args; | |
rc->asm_type_sig = asm_type_sig; | |
#endif | |
#if DEBUG_PRINT | |
DEBUG_printf("assign native: kind=%d fun=%p len=" UINT_FMT " flags=%x\n", kind, fun_data, fun_len, (uint)scope_flags); | |
for (mp_uint_t i = 0; i < fun_len; i++) { | |
if (i > 0 && i % 16 == 0) { | |
DEBUG_printf("\n"); | |
} | |
DEBUG_printf(" %02x", ((const byte *)fun_data)[i]); | |
} | |
DEBUG_printf("\n"); | |
#ifdef WRITE_CODE | |
FILE *fp_write_code = fopen("out-code", "wb"); | |
fwrite(fun_data, fun_len, 1, fp_write_code); | |
fclose(fp_write_code); | |
#endif | |
#else | |
(void)fun_len; | |
#endif | |
} | |
#endif | |
mp_obj_t mp_make_function_from_proto_fun(mp_proto_fun_t proto_fun, const mp_module_context_t *context, const mp_obj_t *def_args) { | |
DEBUG_OP_printf("make_function_from_proto_fun %p\n", proto_fun); | |
assert(proto_fun != NULL); | |
// def_args must be MP_OBJ_NULL or a tuple | |
assert(def_args == NULL || def_args[0] == MP_OBJ_NULL || mp_obj_is_type(def_args[0], &mp_type_tuple)); | |
// def_kw_args must be MP_OBJ_NULL or a dict | |
assert(def_args == NULL || def_args[1] == MP_OBJ_NULL || mp_obj_is_type(def_args[1], &mp_type_dict)); | |
#if MICROPY_MODULE_FROZEN_MPY | |
if (mp_proto_fun_is_bytecode(proto_fun)) { | |
const uint8_t *bc = proto_fun; | |
mp_obj_t fun = mp_obj_new_fun_bc(def_args, bc, context, NULL); | |
MP_BC_PRELUDE_SIG_DECODE(bc); | |
if (scope_flags & MP_SCOPE_FLAG_GENERATOR) { | |
((mp_obj_base_t *)MP_OBJ_TO_PTR(fun))->type = &mp_type_gen_wrap; | |
} | |
return fun; | |
} | |
#endif | |
// the proto-function is a mp_raw_code_t | |
const mp_raw_code_t *rc = proto_fun; | |
// make the function, depending on the raw code kind | |
mp_obj_t fun; | |
switch (rc->kind) { | |
#if MICROPY_EMIT_NATIVE | |
case MP_CODE_NATIVE_PY: | |
fun = mp_obj_new_fun_native(def_args, rc->fun_data, context, rc->children); | |
// Check for a generator function, and if so change the type of the object | |
if (rc->is_generator) { | |
((mp_obj_base_t *)MP_OBJ_TO_PTR(fun))->type = &mp_type_native_gen_wrap; | |
} | |
break; | |
case MP_CODE_NATIVE_VIPER: | |
fun = mp_obj_new_fun_viper(rc->fun_data, context, rc->children); | |
break; | |
#endif | |
#if MICROPY_EMIT_INLINE_ASM | |
case MP_CODE_NATIVE_ASM: | |
fun = mp_obj_new_fun_asm(rc->asm_n_pos_args, rc->fun_data, rc->asm_type_sig); | |
break; | |
#endif | |
default: | |
// rc->kind should always be set and BYTECODE is the only remaining case | |
assert(rc->kind == MP_CODE_BYTECODE); | |
fun = mp_obj_new_fun_bc(def_args, rc->fun_data, context, rc->children); | |
// check for generator functions and if so change the type of the object | |
if (rc->is_generator) { | |
((mp_obj_base_t *)MP_OBJ_TO_PTR(fun))->type = &mp_type_gen_wrap; | |
} | |
#if MICROPY_PY_SYS_SETTRACE | |
mp_obj_fun_bc_t *self_fun = (mp_obj_fun_bc_t *)MP_OBJ_TO_PTR(fun); | |
self_fun->rc = rc; | |
#endif | |
break; | |
} | |
return fun; | |
} | |
mp_obj_t mp_make_closure_from_proto_fun(mp_proto_fun_t proto_fun, const mp_module_context_t *context, mp_uint_t n_closed_over, const mp_obj_t *args) { | |
DEBUG_OP_printf("make_closure_from_proto_fun %p " UINT_FMT " %p\n", proto_fun, n_closed_over, args); | |
// make function object | |
mp_obj_t ffun; | |
if (n_closed_over & 0x100) { | |
// default positional and keyword args given | |
ffun = mp_make_function_from_proto_fun(proto_fun, context, args); | |
} else { | |
// default positional and keyword args not given | |
ffun = mp_make_function_from_proto_fun(proto_fun, context, NULL); | |
} | |
// wrap function in closure object | |
return mp_obj_new_closure(ffun, n_closed_over & 0xff, args + ((n_closed_over >> 7) & 2)); | |
} |